SC16C2550BIN40 datasheet(6/42 Pages) PHILIPS

Part #	SC16C2550BIN40

Description	5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

SC16C2550B

5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs

Product data

Rev. 02 — 14 December 2004

6 of 42

9397 750 14449

5.2 Pin description

Fig 4.

LQFP48 pin conﬁguration.

SC16C2550BIB48

002aaa598

1

2

3

4

5

6

7

8

9

10

11

12

36

35

34

33

32

31

30

29

28

27

26

25

D5

D6

D7

RXB

RXA

TXRDYB

TXA

TXB

OP2B

CSA

CSB

N.C.

RESET

DTRB

DTRA

RTSA

OP2A

RXRDYA

INTA

INTB

A0

A1

A2

N.C.

Table 2:

Pin description

Symbol

Type Description

DIP40 PLCC44 LQFP48

A0

28

31

28

I

Address 0 select bit. Internal register address selection.

A1

27

30

27

I

Address 1 select bit. Internal register address selection.

A2

26

29

26

I

Address 2 select bit. Internal register address selection.

CSA, CSB 14, 15 16, 17

10, 11

I

Chip Select A, B (Active-LOW). This function is associated with individual

channels, A through B. These pins enable data transfers between the user

CPU and the SC16C2550B for the channel(s) addressed. Individual UART

sections (A, B) are addressed by providing a logic 0 on the respective CSA,

CSB pin.

D0-D7

1-8

2-9

44-48,

1-3

I/O

Data bus (bi-directional). These pins are the 8-bit, 3-State data bus for

transferring information to or from the controlling CPU. D0 is the least

signiﬁcant bit and the ﬁrst data bit in a transmit or receive serial data

stream.

GND

20

22

17

I

Signal and power ground.

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